Transcript
APPLIED POWER SYSTEMS, INC.
CAP6637A AC-DC Open Loop Converter
CAP6637A AC-DC Open Loop Converter Description: The CAP6637 is a three-phase AC to DC Converter assembly. The assembly includes the three-phase SCR converter bridge, a free wheeling diode, the thermal management system, a BAP1950 SCR phase control gate firing board, an R-CMOV snubber for each SCR and all bus work. It is rated at 125 Amps output and up to 660 volts AC input at 50 or 60 Hz. Typical use for the CAP6637 is as an ACDC controller for OEM equipment; boost charger power supplies for rail and many other applications. The CAP6636 can be voltage limited and current regulated for precision DC applications. Contact APS for higher power system requirements. Specifications: Input Parameter Ambient Temperature Input AC Voltage Frequency
Min -40 50 47
Typ
Min
Typ 150
480 60
Max 50 660 77
Units °C Volts Hz
SCR Modules Parameter Average Current One cycle peak current Blocking Voltage Module Isolation Voltage dV/dt dI/dt (non-repetitive)
124 Charlotte Avenue
Hicksville, NY 11801
3,500 1,000 300
Ph: 516.935.2230
Fax: 516.935.2603
Max Units 175 Amps 4,000 Amps 1,600 Volts Volts V/µs A/µs
Website: www.appliedps.com
Page 1 of 5 Rev.: 050807-01
APPLIED POWER SYSTEMS, INC.
CAP6637A AC-DC Open Loop Converter
BAP1950 Gate Firing Board Power Requirements Parameter Input Voltage1 Power rating
Min 100
Typ 115
Max Units 130 Vac 24 VA
Min 0 0
Typ
Max Units 900 Vdc 125 Amps Hz
Converter Output Parameter Output Voltage Current Ripple Frequency (at 60 Hz)
360
Isolation The low level signal inputs are isolated from the high level DC output and AC input in the following manner: Isolation AC Supply AC Supply and DC Load BAP1950 Input Power
1
Isolation Method The AC supply is sensed through a resistor voltage divider with a 1meg isolation resistance on each phase. 5,000Vac (60 sec.) – rating from gate pulse transformers 2500Vac (1 min.) from input transformer on board.
Other input voltages are available. Please consult APS for further information.
124 Charlotte Avenue
Hicksville, NY 11801
Ph: 516.935.2230
Fax: 516.935.2603
Website: www.appliedps.com
Page 2 of 5 Rev.: 050807-01
APPLIED POWER SYSTEMS, INC.
CAP6637A AC-DC Open Loop Converter
J3 Connector Pin
Signal Name
Color
1 2 3 4
24 VAC 24 VAC 24 VDC Fast Turn off
5
Master/Slave
6 7 8
15 VDC 5 VDC GND
9
Inhibit Enunciate
10
Delay Angle Control
White
11
GND
Black
12
Soft Start/Stop
Blue
Yellow
Red Black
Description From secondary winding of T2. 250mA available for customer use. From secondary winding of T2. 250mA available for customer use. 250mA available for customer use. Shorting this signal to pin 6 or 7 enables gate pulses. Letting it float will disable the gating signals within 20uS. This pin is used when 2 or more boards are configured as Master/Slaves. 50mA available for customer use. 50mA available for customer use. Reference for AP1950 control circuitry, including Delay Angle Control. Therefore, it must be tied to the reference of a customer provided Delay Angle Control signal. Normally low (through a 1K resistor). Transitions high in a Fast Turn off or in an out of phase lock condition. 0 to 5V analog input to control the delay angle. 0V Max Delay Angle (corresponding to minimum output voltage); 5V Min Delay Angle (corresponding to maximum output voltage). Reference for AP1950 control circuitry, including Delay Angle Control. Therefore, it must be tied to the reference of a customer provided Delay Angle Control signal. When this signal transitions from a contact closure to GND (pin 11 or 8) to an open circuit, the delay angle ramps down from maximum to the programmed value. If control power is applied to the AP1950, a transition from an open circuit to a contact closure to GND, the delay angle ramps up from the programmed value to the max value (minimum output voltage).
Signals with an assigned color are provided in the connector. If additional signals are to be used, the AMP contact part number is 350550-1 and the part number for the recommended crimping tool from AMP is 91500-1. If a potentiometer will be used to control the delay angle, use the setup below.
Customer provided Potentiometer
124 Charlotte Avenue
Hicksville, NY 11801
Ph: 516.935.2230
Fax: 516.935.2603
Website: www.appliedps.com
Page 3 of 5 Rev.: 050807-01
APPLIED POWER SYSTEMS, INC.
CAP6637A AC-DC Open Loop Converter
Schematic of AC-DC Open Loop Converter
124 Charlotte Avenue
Hicksville, NY 11801
Ph: 516.935.2230
Fax: 516.935.2603
Website: www.appliedps.com
Page 4 of 5 Rev.: 050807-01
APPLIED POWER SYSTEMS, INC.
124 Charlotte Avenue
CAP6637 AC-DC Open Loop Converter
Hicksville, NY 11801
Ph: 516.935.2230
Fax: 516.935.2603 Website: www.appliedps.com
Page 5 of 5 Rev.: 010307-01
